/*
 * Copyright (c) JForum Team
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met:
 * 
 * 1) Redistributions of source code must retain the above 
 * copyright notice, this list of conditions and the 
 * following  disclaimer.
 * 2)  Redistributions in binary form must reproduce the 
 * above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation and/or 
 * other materials provided with the distribution.
 * 3) Neither the name of "Rafael Steil" nor 
 * the names of its contributors may be used to endorse 
 * or promote products derived from this software without 
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
 * IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
 * 
 * Created on 13/10/2004 23:47:06
 * The JForum Project
 * http://www.jforum.net
 */
package net.jforum.view.forum;

import java.util.List;

import net.jforum.Command;
import net.jforum.JForumExecutionContext;
import net.jforum.SessionFacade;
import net.jforum.context.RequestContext;
import net.jforum.context.ResponseContext;
import net.jforum.dao.DataAccessDriver;
import net.jforum.dao.PostDAO;
import net.jforum.dao.TopicDAO;
import net.jforum.entities.Forum;
import net.jforum.entities.Topic;
import net.jforum.repository.ForumRepository;
import net.jforum.util.I18n;
import net.jforum.util.preferences.ConfigKeys;
import net.jforum.util.preferences.SystemGlobals;
import net.jforum.util.preferences.TemplateKeys;
import net.jforum.util.rss.RSSAware;
import net.jforum.util.rss.RecentTopicsRSS;
import net.jforum.util.rss.TopicPostsRSS;
import net.jforum.util.rss.TopicRSS;
import net.jforum.view.forum.common.TopicsCommon;
import freemarker.template.SimpleHash;
import freemarker.template.Template;

/**
 * @author Rafael Steil
 * @version $Id: RSSAction.java,v 1.32 2007/09/02 14:30:48 rafaelsteil Exp $
 */
public class RSSAction extends Command {
    /**
     * RSS for all N first topics for some given forum
     */
    public void forumTopics() {
	int forumId = this.request.getIntParameter("forum_id");

	if (!TopicsCommon.isTopicAccessible(forumId)) {
	    JForumExecutionContext.requestBasicAuthentication();
	    return;
	}

	List posts = DataAccessDriver
		.getInstance()
		.newPostDAO()
		.selectLatestByForumForRSS(forumId,
			SystemGlobals.getIntValue(ConfigKeys.TOPICS_PER_PAGE));

	Forum forum = ForumRepository.getForum(forumId);
	String[] p = { forum.getName() };

	RSSAware rss = new TopicRSS(
		I18n.getMessage("RSS.ForumTopics.title", p), I18n.getMessage(
			"RSS.ForumTopics.description", p), forumId, posts);

	this.context.put("rssContents", rss.createRSS());
    }

    /**
     * RSS for all N first posts for some given topic
     */
    public void topicPosts() {
	int topicId = this.request.getIntParameter("topic_id");

	PostDAO pm = DataAccessDriver.getInstance().newPostDAO();
	TopicDAO tm = DataAccessDriver.getInstance().newTopicDAO();

	Topic topic = tm.selectById(topicId);

	if (!TopicsCommon.isTopicAccessible(topic.getForumId())
		|| topic.getId() == 0) {
	    JForumExecutionContext.requestBasicAuthentication();
	    return;
	}

	tm.incrementTotalViews(topic.getId());

	List posts = pm.selectAllByTopic(topicId);

	String[] p = { topic.getTitle() };

	String title = I18n.getMessage("RSS.TopicPosts.title", p);
	String description = I18n.getMessage("RSS.TopicPosts.description", p);

	RSSAware rss = new TopicPostsRSS(title, description,
		topic.getForumId(), posts);
	this.context.put("rssContents", rss.createRSS());
    }

    public void recentTopics() {
	String title = I18n.getMessage("RSS.RecentTopics.title",
		new Object[] { SystemGlobals.getValue(ConfigKeys.FORUM_NAME) });
	String description = I18n.getMessage("RSS.RecentTopics.description");

	List posts = DataAccessDriver
		.getInstance()
		.newPostDAO()
		.selectHotForRSS(
			SystemGlobals.getIntValue(ConfigKeys.POSTS_PER_PAGE));

	RSSAware rss = new RecentTopicsRSS(title, description, posts);
	this.context.put("rssContents", rss.createRSS());
    }

    /**
     * @see net.jforum.Command#list()
     */
    public void list() {

    }

    /**
     * @see net.jforum.Command#process(net.jforum.context.RequestContext,
     *      net.jforum.context.ResponseContext, freemarker.template.SimpleHash)
     */
    public Template process(RequestContext request, ResponseContext response,
	    SimpleHash context) {
	if (!SessionFacade.isLogged()
		&& UserAction.hasBasicAuthentication(request)) {
	    new UserAction().validateLogin(request);
	    JForumExecutionContext.setRedirect(null);
	}

	JForumExecutionContext.setContentType("text/xml");
	super.setTemplateName(TemplateKeys.RSS);

	return super.process(request, response, context);
    }

}
